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CACHOLONG - 2 reference results
Cacholong also known as Kalmuck Agate is a form of common Opal although it is often mistaken for Agate or Chalcedony. A milky white colour with a Moh hardness of about 6, it is used for carving, cameos etc. Found in Austria, Czech Republic, Mongolia and Uzbekistan; its name possibly comes from a river in Uzbekistan.
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